Added TODO file which currently includes a whole host of items for implementing HLC (hybrid logical clock), Transactions, range splitting and rebalancing.
Added TODO file which currently includes a whole host of items for implementing HLC (hybrid logical clock), Transactions, range splitting and rebalancing.

Test Plan: n/a

Reviewers: Tobias, andybons

Reviewed By: andybons

Differential Revision: http://phabricator.cockroachdb.org/D75

bg451/cockroach,bg451/cockroach,GokulSrinivas/cockroach,marcuswestin/cockroach,cuongdo/cockroach,maxlang/cockroach,ngaut/cockroach,cockroachdb/cockroach,iqstack/cockroach,freakynit/cockroach,vivekmenezes/cockroach,arypurnomoz/cockroach,cuongdo/cockroach,yosiat/cockroach,jgautheron/cockroach,il9ue/cockroach,veteranlu/cockroach,slavau/cockroach,yosiat/cockroach,domluna/cockroach,mbonaci/cockroach,Kevin-GuanJian/cockroach,chrisseto/cockroach,slavau/cockroach,jess-edwards/cockroach,Abioy/cockroach,cuongdo/cockroach,alex/cockroach,arjun4084346/cockroach,vivekmenezes/cockroach,domluna/cockroach,c4pt0r/cockroach,linearb/cockroach,linearb/cockroach,nieyy/cockroach,XisiHuang/cockroach,ngaut/cockroach,Kevin-GuanJian/cockroach,maxlang/cockroach,jmank88/cockroach,glycerine/cockroach,marcuswestin/cockroach,hassyma/cockroach,maxlang/cockroach,jmank88/cockroach,vaibhavarora/cockroach,mbertschler/cockroach,jmank88/cockroach,es-chow/cockroach,vaibhavarora/cockroach,GokulSrinivas/cockroach,hassyma/cockroach,paperstreet/cockroach,alex/cockroach,yananzhi/cockroach,paperstreet/cockroach,yosiat/cockroach,sunya123/cockroach,cuongdo/cockroach,XuWanHong/cockroach-1,mbonaci/cockroach,domluna/cockroach,hassyma/cockroach,XisiHuang/cockroach,sunya123/cockroach,nkhuyu/cockroach,alunarbeach/cockroach,paperstreet/cockroach,nkhuyu/cockroach,petermattis/cockroach,veteranlu/cockroach,jamesgraves/cockroach,jamesgraves/cockroach,domluna/cockroach,XuWanHong/cockroach-1,freakynit/cockroach,alunarbeach/cockroach,jamesgraves/cockroach,yiixiansheng/cockroach,loucash/cockroach,yiixiansheng/cockroach,briceburg/cockroach,fengshao0907/cockroach,vaibhavarora/cockroach,ngaut/cockroach,iqstack/cockroach,yiixiansheng/cockroach,il9ue/cockroach,XisiHuang/cockroach,vaibhavarora/cockroach,yananzhi/cockroach,maxlang/cockroach,yananzhi/cockroach,jgautheron/cockroach,XuWanHong/cockroach-1,nieyy/cockroach,petermattis/cockroach,ajayaa/cockroach,petermattis/cockroach,chrisseto/cockroach,maxlang/cockroach,il9ue/cockroach,veteranlu/cockroach,hassyma/cockroach,vivekmenezes/cockroach,nkhuyu/cockroach,freakynit/cockroach,iqstack/cockroach,alex/cockroach,mbonaci/cockroach,Kevin-GuanJian/cockroach,glycerine/cockroach,ajayaa/cockroach,ajayaa/cockroach,arjun4084346/cockroach,es-chow/cockroach,nieyy/cockroach,marcuswestin/cockroach,SustainFund/cockroach,mbonaci/cockroach,Kevin-GuanJian/cockroach,marcuswestin/cockroach,sunya123/cockroach,XisiHuang/cockroach,petermattis/cockroach,iqstack/cockroach,hassyma/cockroach,alunarbeach/cockroach,vivekmenezes/cockroach,jess-edwards/cockroach,arjun4084346/cockroach,sunya123/cockroach,veteranlu/cockroach,XisiHuang/cockroach,loucash/cockroach,veteranlu/cockroach,paperstreet/cockroach,jess-edwards/cockroach,jgautheron/cockroach,il9ue/cockroach,jess-edwards/cockroach,il9ue/cockroach,bg451/cockroach,loucash/cockroach,glycerine/cockroach,Abioy/cockroach,briceburg/cockroach,SustainFund/cockroach,arypurnomoz/cockroach,veteranlu/cockroach,cockroachdb/cockroach,jgautheron/cockroach,jamesgraves/cockroach,alex/cockroach,iqstack/cockroach,yananzhi/cockroach,nieyy/cockroach,linearb/cockroach,cuongdo/cockroach,ajayaa/cockroach,c4pt0r/cockroach,maxlang/cockroach,glycerine/cockroach,jmank88/cockroach,cockroachdb/cockroach,briceburg/cockroach,mbertschler/cockroach,Abioy/cockroach,domluna/cockroach,domluna/cockroach,es-chow/cockroach,loucash/cockroach,yananzhi/cockroach,vivekmenezes/cockroach,yiixiansheng/cockroach,nieyy/cockroach,abhishekgahlot/cockroach,paperstreet/cockroach,XuWanHong/cockroach-1,cockroachdb/cockroach,es-chow/cockroach,jamesgraves/cockroach,alunarbeach/cockroach,sunya123/cockroach,cuongdo/cockroach,jess-edwards/cockroach,jmank88/cockroach,chrisseto/cockroach,arjun4084346/cockroach,Kevin-GuanJian/cockroach,c4pt0r/cockroach,mbertschler/cockroach,glycerine/cockroach,petermattis/cockroach,jamesgraves/cockroach,vaibhavarora/cockroach,jgautheron/cockroach,nieyy/cockroach,vaibhavarora/cockroach,GokulSrinivas/cockroach,ngaut/cockroach,veteranlu/cockroach,glycerine/cockroach,cockroachdb/cockroach,slavau/cockroach,loucash/cockroach,alex/cockroach,cuongdo/cockroach,jmank88/cockroach,cockroachdb/cockroach,il9ue/cockroach,ngaut/cockroach,glycerine/cockroach,vivekmenezes/cockroach,vivekmenezes/cockroach,briceburg/cockroach,ngaut/cockroach,freakynit/cockroach,mbonaci/cockroach,petermattis/cockroach,alex/cockroach,alunarbeach/cockroach,yananzhi/cockroach,fengshao0907/cockroach,iqstack/cockroach,yosiat/cockroach,c4pt0r/cockroach,paperstreet/cockroach,paperstreet/cockroach,bg451/cockroach,ngaut/cockroach,Kevin-GuanJian/cockroach,linearb/cockroach,hassyma/cockroach,bg451/cockroach,es-chow/cockroach,nkhuyu/cockroach,slavau/cockroach,marcuswestin/cockroach,fengshao0907/cockroach,nieyy/cockroach,vaibhavarora/cockroach,jmank88/cockroach,yosiat/cockroach,jgautheron/cockroach,abhishekgahlot/cockroach,glycerine/cockroach,ajayaa/cockroach,GokulSrinivas/cockroach,abhishekgahlot/cockroach,es-chow/cockroach,mbertschler/cockroach,cockroachdb/cockroach,arjun4084346/cockroach,marcuswestin/cockroach,nkhuyu/cockroach,briceburg/cockroach,freakynit/cockroach,XuWanHong/cockroach-1,c4pt0r/cockroach,abhishekgahlot/cockroach,arypurnomoz/cockroach,Abioy/cockroach,nkhuyu/cockroach,SustainFund/cockroach,c4pt0r/cockroach,GokulSrinivas/cockroach,mbertschler/cockroach,mbertschler/cockroach,arjun4084346/cockroach,cockroachdb/cockroach,loucash/cockroach,petermattis/cockroach,domluna/cockroach,bg451/cockroach,chrisseto/cockroach,sunya123/cockroach,abhishekgahlot/cockroach,fengshao0907/cockroach,linearb/cockroach,linearb/cockroach,SustainFund/cockroach,vivekmenezes/cockroach,jess-edwards/cockroach,yananzhi/cockroach,Abioy/cockroach,alunarbeach/cockroach,yiixiansheng/cockroach,es-chow/cockroach,petermattis/cockroach,bg451/cockroach,Kevin-GuanJian/cockroach,freakynit/cockroach,mbonaci/cockroach,fengshao0907/cockroach,mbertschler/cockroach,briceburg/cockroach,abhishekgahlot/cockroach,jamesgraves/cockroach,XisiHuang/cockroach,fengshao0907/cockroach,veteranlu/cockroach,ajayaa/cockroach,GokulSrinivas/cockroach,XuWanHong/cockroach-1,arjun4084346/cockroach,jess-edwards/cockroach,chrisseto/cockroach,il9ue/cockroach,SustainFund/cockroach,slavau/cockroach,iqstack/cockroach,SustainFund/cockroach,yosiat/cockroach,maxlang/cockroach,nieyy/cockroach,yiixiansheng/cockroach,arypurnomoz/cockroach,slavau/cockroach,paperstreet/cockroach,linearb/cockroach,il9ue/cockroach,sunya123/cockroach,vaibhavarora/cockroach,marcuswestin/cockroach,cuongdo/cockroach,chrisseto/cockroach,arjun4084346/cockroach,XuWanHong/cockroach-1,marcuswestin/cockroach,maxlang/cockroach,sunya123/cockroach,arypurnomoz/cockroach,arypurnomoz/cockroach,Abioy/cockroach